NATURAL RADIOACTIVITY MEASUREMENT AND DOSE ASSESSMENT OF BEACH PLACER SANDS IN THE COASTAL REGION OF TAMIL NADU (INDIA)

被引：12
|
作者：
Veerasamy, N. [1 ,2 ]
Sahoo, S. K. [1 ]
Inoue, K. [2 ]
Fukushi, M. [2 ]
Tsuruoka, H. [2 ,3 ]
Arae, H. [1 ]
Balakrishnan, S. [4 ]
机构：
[1] Natl Inst Quantum & Radiol Sci & Technol QST, Chiba, Japan
[2] Tokyo Metropolitan Univ, Tokyo, Japan
[3] Tsukuba Int Univ, Ibaraki, Japan
[4] Pondicherry Univ, Pondicherry, India
来源：
RADIATION PROTECTION DOSIMETRY | 2019年 / 184卷 / 3-4期
关键词：
BACKGROUND-RADIATION AREA; EASTERN COAST; SAMPLES; RADIONUCLIDES; ORISSA; SOIL;
D O I：
10.1093/rpd/ncz109
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
A preliminary study was carried out to determine the radioactivity concentration of Th-232, Ra-226 and K-40 in beach placer sands from 13 locations along the coast line of Tamil Nadu state, India. The ambient dose rates varied from 9 to 467 nGy h(-1). The activity concentrations of radionuclide Th-232, Ra-226 and K-40 ranged from 5.2 to 683 Bq kg(-1), 13 to 198 Bq kg(-1) and 107 to 421 Bq kg(-1), respectively. The annual effective dose rate ranges from 27 to 620 mu Sv y(-1) and was higher at seven beaches in comparison to the UNSCEAR annual worldwide average value.
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页码：409 / 412
页数：4
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